Nahj al-Balāgha

Hadith 1740
governance
١٤٠. وَقَالَ (عليه ‏السلام): مَا عَالَ مَنِ اقْتَصَدَ.
140. Amīr al-mu’minīn, peace be upon him, said: He who is moderate does not become destitute.
Source: al-Sharīf al-Raḍī